From 8ddad454b30cdafc9bbdc0cbd51c653bee8a87e5 Mon Sep 17 00:00:00 2001 From: Marshall Lochbaum Date: Fri, 30 Dec 2022 20:57:20 -0500 Subject: Rebuild with CBQN's new number formatting (ryu) --- docs/doc/under.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs/doc/under.html') diff --git a/docs/doc/under.html b/docs/doc/under.html index 4ec761a8..df79f48c 100644 --- a/docs/doc/under.html +++ b/docs/doc/under.html @@ -82,7 +82,7 @@

Computational Under

Computational Under is based on Undo (⁼), and applies whenever structural Under doesn't. It's still limited, because Undo doesn't work on many or even most functions. One common use is with the square function ט, for computations such as finding the magnitude of a vector, or a root-mean-square average like the one below.

↗️
    (+´÷≠)⌾(ט) 2‿3‿4‿5
-3.674234614174767
+3.6742346141747673

This average is the square root of the average of the squares of the arguments, and ⌾ lets us combine the two square-y steps. Here there are two possible solutions because ¯3.67… has the same square as the positive result; BQN of course uses the principal root. Similarly, ⌾÷ can be used for a harmonic sum or mean (you might notice that computational Under is a lot more mathy than the structural one).

Under is the idiomatic way to do a round-to-nearest function:

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